happened lastnight the only thing i did different with the phone was put on the new seidio speaker opening back cover. but im pretty sure that's not gonna cause it

this is my tmo blackberry. i get full signal with the phone but under the bars, the edge disappeared. i cant make calls, receive them, send any kind of message, or get on the internet. i did a battery pull hoping it would solve it but no. i went to options, network, and although my data services is on, it says "Network:*None*" - it usually says tmobile.

i tried turning off data services and then the edge came back and everything worked fine...... except the fact that i cant use anything with data. Anyone got a fix